| 词条 | Smooth Trans Focus |
| 释义 |
The Smooth Trans Focus (STF) technology in photographic lenses uses an apodization filter to realize notably smooth bokeh with rounded out-of-focus highlights in both the foreground and background. This is accomplished by utilizing a concave neutral-gray tinted lens element next to the aperture blades as apodization filter, a technology originally invented (and patented) by Minolta in the 1980s, and first implemented in a commercially available lens in 1999. In contrast to soft focus lenses, STF lenses render a perfectly sharp image in the focus plane. Lenses featuring Smooth Trans Focus technology:
See also
References}}{{photo-stub}} 5 : Minolta A-mount lenses|Sony A-mount lenses|Sony E-mount lenses|Photographic lenses by type|Photographic lens designs |
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